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<h1><img src="../../../boost.png" alt="Boost logo" align=
"middle" width="277" height="86">Boost.Flyweight Release notes</h1>

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<h2>Contents</h2>

<ul>
  <li><a href="#boost_1_74">Boost 1.74 release</a></li>
  <li><a href="#boost_1_73">Boost 1.73 release</a></li>
  <li><a href="#boost_1_71">Boost 1.71 release</a></li>
  <li><a href="#boost_1_69">Boost 1.69 release</a></li>
  <li><a href="#boost_1_60">Boost 1.60 release</a></li>
  <li><a href="#boost_1_58">Boost 1.58 release</a></li>
  <li><a href="#boost_1_57">Boost 1.57 release</a></li>
  <li><a href="#boost_1_56">Boost 1.56 release</a></li>
  <li><a href="#boost_1_55">Boost 1.55 release</a></li>
  <li><a href="#boost_1_45">Boost 1.45 release</a></li>
  <li><a href="#boost_1_44">Boost 1.44 release</a></li>
  <li><a href="#boost_1_40">Boost 1.40 release</a></li>
  <li><a href="#boost_1_39">Boost 1.39 release</a></li>
  <li><a href="#boost_1_38">Boost 1.38 release</a></li>
</ul>

<h2><a name="boost_1_74">Boost 1.74 release</a></h2>

<p>
<ul>
  <li>Maintenance work.</li>
</ul>
</p>

<h2><a name="boost_1_73">Boost 1.73 release</a></h2>

<p>
<ul>
  <li>Maintenance work.</li>
</ul>
</p>

<h2><a name="boost_1_71">Boost 1.71 release</a></h2>

<p>
<ul>
  <li>Maintenance work.</li>
</ul>
</p>

<h2><a name="boost_1_69">Boost 1.69 release</a></h2>

<p>
<ul>
  <li>Fixed some issues in GCC related to Boost.MPL placeholder expression handling.</li>
  <li>Maintenance fixes.</li>
</ul>
</p>

<h2><a name="boost_1_60">Boost 1.60 release</a></h2>

<p>
<ul>
  <li>Maintenance fixes.</li>
</ul>
</p>

<h2><a name="boost_1_58">Boost 1.58 release</a></h2>

<p>
<ul>
  <li>Added hash support both with <code>std::hash</code> and
     <a href="../../../doc/html/hash.html"><code>boost::hash</code></a>. This
     can be optionally <a href="reference/flyweight.html#disable_hash_support">disabled</a>
     to avoid clashes with legacy code where this support has already been defined by
     the user.
  </li>
  <li>Maintenance fixes.</li>
</ul>
</p>

<h2><a name="boost_1_57">Boost 1.57 release</a></h2>

<p>
<ul>
  <li>Added serialization support via
    <a href="../../serialization/index.html">Boost Serialization</a>.
  </li>
  <li>
    <code>flyweight</code> default constructor was made <code>explicit</code> in
    Boost 1.56, which introduces a regression in some
    <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#1518">initialization
    scenarios</a>. The former non-<code>explicit</code>
    default constructor has been restored
    (ticket <a href="https://svn.boost.org/trac/boost/ticket/10439">#10439</a>).
  </li>
</ul>
</p>

<h2><a name="boost_1_56">Boost 1.56 release</a></h2>

<p>
<ul>
  <li>In compilers with variadic template support, <code>boost::flyweight&lt;T&gt;</code> now provides
    a perfectly forwarding constructor to <code>T::T</code> (previously an emulation
    was used).</li>
  <li><code>flyweight</code> now replicates the initializer-list constructors and assignment
    operators of its underlying type.</li>
  <li>Fixed intermodule static initialization problem
    (ticket <a href="https://svn.boost.org/trac/boost/ticket/9553">#9553</a>).</li>
  <li>Maintenance fixes.</li>
</ul>
</p>

<h2><a name="boost_1_55">Boost 1.55 release</a></h2>

<p>
<ul>
  <li>Maintenance fixes.</li>
</ul>
</p>

<h2><a name="boost_1_45">Boost 1.45 release</a></h2>

<p>
<ul>
  <li>Fixed a hanging problem with
    <a href="tutorial/configuration.html#intermodule_holder"><code>intermodule_holder</code></a>
    in Win32 platforms related to a Boost.Interprocess issue described at
    ticket <a href="https://svn.boost.org/trac/boost/ticket/4606">#4606</a>.
  </li>
  <li>Removed an internal assertion incompatible with program termination
    via <code>std::exit</code>.
  </li>
</ul>
</p>

<h2><a name="boost_1_44">Boost 1.44 release</a></h2>

<p>
<ul>
  <li>Fixed an incorrect mode of usage of Boost.Variant in
    <a href="examples.html#example3">one of the examples</a>.
  </li>
</ul>
</p>

<h2><a name="boost_1_40">Boost 1.40 release</a></h2>

<p>
<ul>
  <li>Maintenance fixes.</li>
</ul>
</p>

<h2><a name="boost_1_39">Boost 1.39 release</a></h2>

<p>
<ul>
  <li><a name="refcounted_bug">The <a href="tutorial/configuration.html#refcounted"><code>refcounted</code></a>
    component was not thread-safe due to an incorrect implementation and could deadlock
    under heavy usage conditions. This problem has been corrected.</a>
  </li>
</ul>
</p>

<h2><a name="boost_1_38">Boost 1.38 release</a></h2>

<p>
<ul>
  <li>Initial release of Boost.Flyweight.</li>
</ul>
</p>

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<p>Revised May 10th 2020</p>

<p>&copy; Copyright 2006-2020 Joaqu&iacute;n M L&oacute;pez Mu&ntilde;oz.
Distributed under the Boost Software 
License, Version 1.0. (See accompanying file <a href="../../../LICENSE_1_0.txt">
LICENSE_1_0.txt</a> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">
http://www.boost.org/LICENSE_1_0.txt</a>)
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